CnetSDK.Barcode.Scanner.Trial.dll is under the folder Library in the download free trial package. For free trial package, you can use all bar code scanning and reading features in your VB.NET project. But note that, the first data value of each barcode will be a recognized as CnetSDK*.

CnetSDK .NET barcode reader library trial package can only be used for testing purpose. To get all encoded value recognized, please buy a license for CnetSDK .NET Barcode Scanner SDK.

.NET APIS FOR BARCODE SCANNING & READING

CnetSDK .NET Barcode Scanner & Decoder allows VB.NET developers to load an image from String, Stream, and Bitmap by using nine mature .NET APIs. And no matter how many barcodes on your image source, our .NET barcode scanner & decoder can read and decode them all. Certainly, you can use .NET APIs to tell barcode scanner library to read only the one barcode type from an image source. If there's only one barcode on your image, you can improve barcode reading accuracy using the third group of .NET APIs. Please see all mature .NET APIs as below. For your VB.NET barcode scanning project, choose the suitable one.

' API for all barcodes reading & decoding from Bitmap object.

public static ScanResult() ScanBarcode(Bitmap Bitmap)

' API for all barcodes reading & decoding from Stream object.

public static ScanResult() ScanBarcode(Stream Stream)

' API for all barcodes reading & decoding from an image file on the disk.

' API for the only barcode scanning from Bitmap. It improves barcode decoding accuracy.

public static ScanResult() ScanOnlyBarcode(Bitmap Bitmap)

' API for the only barcode scanning from Stream. It improves barcode decoding accuracy.

public static ScanResult() ScanOnlyBarcode(Stream Stream)

' API for the only barcode scanning from local image file. It improves barcode decoding accuracy.

public static ScanResult() ScanOnlyBarcode(String FileName)

.NET BARCODE SCANNER VB.NET CODE EXAMPLE

For your reference, CnetSDK.com offers VB.NET demo code for how to read and recognize all barcodes from an image source, VB.NET demo code for how to read and recognize one barcode type from an image source, and VB.NET demo code for the only barcode decoding. As for the second example, a certain barcode type recognition using VB.NET programming language, we take 2d barcode QR Code as an example. And for the last one, it can improve the accuracy of barcode decoding.